Ryūichi plays the role of Tatsuichi in the historical drama play. Just like in Downtown Nekketsu Monogatari, Tatsuichi along with his twin brother Tatsuji kidnap Okoto (whose role is played by Hasebe).

Ryūichi is one of the many available characters that can be added to any of the player's custom teams. He is also in the game's cover art, sporting a mullet similarly to the one Billy Lee had at the time in Return of Double Dragon.

Localized version

in River City Ransom: Underground Randy only appears in the game's prologue, a flashback sequence in which the player plays through the final level of the original (starting with the fight against Ivan until facing Slick. Strangely, even though they were Cindy's original kidnappers, they do not appear in the present portion of the game.

Trivia

Ryūichi has a height 176 cm (5'9").

Ryūichi is loosely based on Billy Lee, one of the main protagonists of the Double Dragon series of beat 'em up games, which in turn was directly derived from the Kunio-kun series. The iconic "Double Dragon" theme even plays whenever he and his twin brother, Ryūji, appear.